<ul class="list-group">
  <li class="list-group-item">
    <a routerLink="newsdetail">新闻标题</a>
  </li>
  <li class="list-group-item">
    <a>新闻标题</a>
    </li>
  <li class="list-group-item">
  <a>新闻标题</a>
 </li>
  <li class="list-group-item">
  <a>新闻标题</a>
</li>
  <li class="list-group-item">
    <a>新闻标题</a>
  </li>
</ul>
